Add support to query modem activity info in ril

Implement RIL_REQUEST_GET_ACTIVITY_INFO to pass testModemActivityInfo.

Bug: 78235709
Test: ./android-cts/tools/cts-tradefed run cts -m CtsStatsdHostTestCases \
          -t android.cts.statsd.atom.HostAtomTests#testModemActivityInfo
Signed-off-by: Roman Kiryanov <rkir@google.com>

Merged-In: I4df288f270d896027a19a495874e125ac5def359
(cherry picked from commit 9cd132b0458e0615d100cf0e1316870567155125)
1 file changed